captioning sponsored by macneil/lehrer productions captioned by media access group at wgbh access.wgbh.org >> rose: welcome to the program. this evening we talk about one of the biggest global challenges of our time, it is clean water. first up, muhtar kent, the ceo of coca-cola company, gabriel jaramillo of the global fund and dean kamen of deka research. >> they can attempt to solve the problem, they can spend fund, time, effort and energy, butt the end of the day the problem that, the challenge can only really be sustainably solved if you bring the t